Jack



May 16, 1933. A SAEDER v 1,908,793

JACK

Fil ed Nov. 29, 1952 3 Sheets-Sheet 2 Z l /6I I O4 f j Inventor JZZ/Zh $94592 A. SAEDER May 16, 1933.

JACK

Filed Nov. 29, 1932 3 Sheets-Sheet 3 Patented May 16, 1933 omrsn smrss 1 ALVIN SAEDER, or sr. Louis, MISSOURI, AssIenoR or one-HALF TO ammo '1 ALJINOVICH, or s'r. LOUIS, MISSOURI TACK The present invention relates tonew and useful improvements in jacksand has for its primary object to provide, in a manner as hereinafter set forth, a device of thischaracter embodying a novel construction,combina tion and arrangement of parts through the medium of which objects, after the same have been raised, maybe shifted horizontally, thus providing a tool which is particularly desirable for certain kinds of work such, for example,as replacing derailed streetand railroad cars.

Another important object of the invention is to provide a jack ofthe aforementioned character embodying a novel construction and arrangement of fluid actuated means for shifting the jack horizontally, together with fluid actuated means for elevating the jack.

. Other objects of the invention are to provide a jack of the character described which will'be simple in construction, strong, durable, highlyefficient and reliable in use, compact, light weight, and which may be manufactured at low-cost. I

All of the foregoing and still further. objects and advantages of. the invention will become apparent fro'm ajstudy'of the follow ing specification, taken in connection with the accompanying drawings wherein like char- 39 acters of reference designate corresponding parts throughout the several views, and wherein: 7 t

Figure 1 is a view intop plan ofa jac 'k constructed in accordance with the present invention.

Figure 2 is a View in vertical section, taken substantially on the line 22 of Figure 1.

Figure 3 is a view in vertical section, taken substantially on the line 3-53 of Figure 1.

Figure 4 is a vertical sectional View, taken substantially on the line 44 of Figure 1.

Figure 5 is a horizontal sectional view, taken substantially on the line 5-5 of Fig- 45 ure 3, i Y

Figure 6 is a view in vertical transverse section, taken substantially on the line 6-6 of Figure 2.

Figure 7 is a view in vertical longitudinal section through the pulley unit.

Figure 8 is adeta-il view in elevation, looking atone-end of the track. a 1 Figure 9 isa-de'tail view in top plan of the trac a Referringnowto the drawings in detail, it 53 will be seen that the'embodiment of the present invention which has been i-llustratedcdmprises a track 1 of suitable material, preferably metal, said track having formed integrally therewitha pair of raised, inwardly e0 extendinggopposed flanges'2, providing chan.- nels On one end fof-the track 1 is :a ,sta: tionary stop 4 from which ahandle ,5 extends. Ears 6 rise from the other end 0f the track 1 at one side thereof-and pivotally mounted 85 between said ears is a gate '2' having a handle 8 projecting therefrom. The adjacent end portion of the track '1 is formed or recessed to accommodate the gate 7 in ,closedposition, as illustrated to advantagein, Figures 1;, 2, It and 8 offthe drawings. i V The reference numeral 9 designates j geners ally the base of j-thejack, said base-including a substantially "U-shaped lower portion, the legs 10 of which termihataj-attheir lower ends, in out-turnedfflangesill whichare slidably "engaged in the channels .3 beneath the flanges? of the track 1. Itwill thus be seen that the base 9 -is mounted-"forhorizontal sliding movement on the track 1 Mounted on one-side of the base ;9-isia pulley housing 11 on the outer side of ,whieh provided an integral rotor-casing-lQ. :Spaced, rotary shafts 13 traverse the substantially U-shaped lower portion. of the base 9 and extend through the housing 11. Grooved pulleys. 14 are fixed on the shafts 13 the housing 11. Gears 15 are jfixed onthe shafts 13 in the base 9 and arei-n ineshfwi'th rack teeth 16 which rise from the track -1. w

I The outer side of the rotor casing 12 is closed by a removable plate 17;, Journaled centrally in thecas-i-ng 12 and extending through the housing 11- between the pulleys 14 is ashaft 18., A grooved'pulley19, sifhilar to the pulleys 14, is fixed on the shaft 18 in the housing 11. An endless belt-2O is crossed and trained over thepulleys 1'4 and 19; in a manner ,togeperatively connect the pulleysl4 to thepulley 19 for actuation thereby in the same direction. A rotor 21 is fixed on the shaft 18 in the casing 12. The blades of the rotor 2l have formed thereon enlargements 22 constituting weights. Fluid conducting pipes 23 extend substantially-tangentially intothe upper portion of therotor casing 12 from opposite directions. The conduits 23 are connected with a suitable source of fluid under pressure (not shown) by valved means (also not shown) through the medium of which the rotor 21 may be driven in either direction.

Rising from the base 9 of the jack is a tubular standard 24 having a top 25 thereon. The top 25 is provided with a central opening inwhich is fixed. a tubular stem 26, the lower portion of which extends into the tubular standard 24. i The lower end of the stem 26 is closed by a plug 28. The upper end of the tubular stem 26 is open and mounted thereon is a ring-equipped piston 29.

Mounted for vertical reciprocation on the piston29 and the stem 26 is a cylinder 30 having -a cap 31 threadedly mounted on its upper end and closing said cylinder at said upper end." A work engaging head 32 is rotatably mounted on the cap 31, said head being retained in position through the medium ofa screw 33 mounted in said head and engaged in a groove 34 which is provided therefor in the cap 31. The lower end of the cylinder-30 is closed, as at 35, said bottom 35- having a central opening therein 'which accommodates the stem 26. When in lowered position, the cylinder 30 rests on the tubular standard 24. A nipple 36 extends from the lower end portion of the stem 26 through the tubular standard 24 for connection with a fluid supply conduit (not shown) from the aforementioned .source.

In use, the jack is positioned beneath the work and fluid under pressure is introduced through thenipple 36 into the stem 26 for raising the cylinder 30, the fluid entering the cylinder from the upper endof said stem 26. f After the work has been raised, it may be shifted'horizontally by discharging fluid under pressure into the casing 12 through either of the pipes 23, according to the direction in which it is desired to shift the work; The fluid enters the casing 12 from one of the pipes 23, actuates the rotor 21, and leaves th'e'casingthrough the other pipe 23. The

rotor 21, through the medium of the pulleys 19 and 14 and the endless belt 20, actuates the gearsl-5 which are engaged with the rack teeth 16, thus moving the base 9 on the track 1. The gat-e 7 permits the base 9 to be removed from the track l'iif desired.

{-Itis believed that the manyadvantages of a jack constructed in accordance with this invention will be readily understood, and, although the preferred embodiment of the invention is as illustrated and describedyit is to be understood that changes in the details of construction and in the combination and arrangement of parts may be resorted to which will fall within the scope of the invention as claimed.

What is claimed is:

1. A jack comprising a track, a rack on the track, a base slidably mounted on the track, a vertically movable work-engaging member mounted on the base, gears rotatably mounted on the base and engaged with the rack, a fluidactuated rotor. mounted on the base, and means operatively connecting the gears t0 the rotor for actuation thereby for shifting the base on the track.

2. A jack comprising a track, a rack on the track, a base shiftably mounted on the track, ahousing mounted on the base, a casing mounted on the housing, spaced shafts journaled in the base and extending into the housing, pulleys fixed on the shafts in the housing, a shaft extending rotatably through the housing and the casing, a fluid-actuated rotor fixed on the second-named shaft in the casing, a pulleyfixed on the second-named shaft in the housing, an :endless belt operatively connecting the first-namedpulleys to the second-named pulley for actuation in the same direction thereby, and gears fixedon the firstnamed shafts and engagedwith the rack for shifting the base on'the track.

3. A jack comprising a track including raised, opposed flanges, a rack formed integrally withthe track intermediate the flanges, a stationary stop on one end of the track, a gate mounted for swinging movement on the other end of the track, a base slidably mounted on the track, said base including a substantially U-shaped lower portion, the, legs of the substantially U-shaped lower portion terminating, "at their lower ends, in outturned flanges engaged beneath the track flanges, a work-engaging member mounted for vertical reciprocation on the base, gears rotatably mounted on the base and engaged with the rack forshifting the base on the track, and means for actuating'the gears.

4. A ack comprising a base, a substantially cylindrical cylinder rising from the base, a top on the cylinder having a central opening therein, a tubular stem fixed in the opening and rising from the cylinder, said stem having its lower end portion extending into the cylinder, a piston fixed on the upper end portion of the tubular stem, a cylinder mounted for vertical reciprocationon the piston and the tubular stem, a head rotatably mounted on the upper end of the cylinder, and means for discharging fluid under pressure into the cylinder'for raising the same.

In testimony whereof I aflix my signature.

- ALVIN SAEDER. 

